ITERATE, International terrorism: attributes of terrorist events, 1960-2020

New values are added with the emergence of new terrorist groups and types of terrorist activity. Incident codes for each event are consistent across files, enabling immediate cross reference. See codebook for further information.

The datasets are based upon, inter alia, an exhaustive search of major media, research, news and information services, including AP, UPI, Reuters, CNN , MSNB , AFP, The Washington Post, New York Times, LA Times, Time, Newsweek, and al-Jazeera. The chronology incorporates information obtained from interviews with government officials, scholars, and former hostages/others involved in international terrorist incidents. Additional sources include relevant manuscripts and scholarly publications dealing with the subject.

Finally, the chronology uses many official government chronologies, including those published by the NCTC, FBI, CIA, US Department of State, and FAA. ITERATE Text and ITERATE Numeric data files were acquired in April 2021.